Free Access

Fig. 1.

image

Scale height of CCs (data from Chen et al. 2019) as a function of the Galactocentric radius (black diamonds). The red curve is the gas scale height (Eq. (4)), i.e. the weighted average of the HI and the H2 scale heights.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.